Draytek VigorAP 903 User Manual page 90

DNS Server IP Address
After finishing this web page configuration, please click OK to save the settings.
agent should redirect the DHCP request to.
DHCP Relay Agent - It is available when Enable Relay Agent is

selected. Set the IP address of the DHCP server you are going to use
so the Relay Agent can help to forward the DHCP request to the DHCP
server.
Disable Server - Disable Server lets you manually or use other DHCP
server to assign IP address to every host in the LAN.
WLAN Trusted DHCP Server

assign IP address for wireless LAN user. However, you can specify
another valid DHCP server on other VigorAP to make the wireless LAN
client obtaining the IP address from the designated DHCP server.
Specify a DHCP server in such field. All the IP addresses of the devices
on LAN of VigorAP will be assigned via such specified server. It is used
to avoid IP assignment interference due to multiple DHCP servers in
one LAN.
Primary DNS Server - You must specify a DNS server IP address here
because your ISP should provide you with usually more than one DNS
Server. If your ISP does not provide it, the modem will automatically apply
default DNS Server IP address: 194.109.6.66 to this field.
Secondary DNS Server - You can specify secondary DNS server IP
address here because your ISP often provides you more than one DNS
Server. If your ISP does not provide it, the modem will automatically apply
default secondary DNS Server IP address: 194.98.0.1 to this field.
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There is no right for such VigorAP to